I raised Alfalfa a time back and I had to spray for Spittle Bug, if you don't then the crop suffers greatly. I did not spray unless the bug was present. I used the product called Seven. It work very good and does little harm to the environment permanently. It can play havoc to Honey Bees. 

             ***********************************************
The BEE-L mailing list is powered by L-Soft's renowned
LISTSERV(R) list management software.  For more information, go to:
http://www.lsoft.com/LISTSERV-powered.html